Year	constant 2015 US$
1960	322.20021464741393
1961	279.40299648776073
1962	273.9853152719439
1963	284.34478535329487
1964	307.4579390906656
1965	332.4168151805649
1966	349.4231560479167
1967	335.72795892094155
1968	332.9138392295242
1969	360.9630140625946
1970	398.57815296263726
1971	414.31316897686565
1972	424.0414040583196
1973	448.5409896598283
1974	455.95951612900143
1975	477.9324032061126
1976	483.05163060123357
1977	510.60879289885423
1978	548.7598117732139
1979	577.9080368453826
1980	611.7760757089413
1981	635.8626378852668
1982	665.2325475744167
1983	704.7094934357932
1984	762.6500728042982
1985	809.8178052807871
1986	853.171330972043
1987	915.4515080641833
1988	987.3952650660044
1989	1026.9458791965005
1990	1062.5964429307862
1991	1130.2306102524485
1992	1238.8188465996209
1993	1359.6811533289488
1994	1488.3600897047206
1995	1614.448552486687
1996	1738.9488633665107
1997	1843.9688643568682
1998	1875.4044320515923
1999	1973.714112169356
2000	2103.596702613705
2001	2229.440314007501
2002	2387.8224021872397
2003	2579.427536536394
2004	2791.7854059454144
2005	3045.6728921816366
2006	3356.6603990244857
2007	3747.2074864294
2008	4039.726242991364
2009	4330.446523769116
2010	4725.8964892182985
2011	5095.330391990357
2012	5435.0167786133425
2013	5783.142863904526
2014	6137.796164488207
2015	6499.963720157149
2016	6874.964227057329
2017	7280.603162201261
2018	7705.282654104913
2019	8104.873318578545
2020	8167.212902909558
2021	8758.22566243755
2022	9033.870387490551
2023	9471.476656856987